QUESTION 2Which three statements are correct about the voice VLAN feature? (Choose three.)

A. It allows the access port to accept tagged voice and untagged data packets.B. It allows you to apply independent CoS actions to data and voice packets.C. It can be used with LLDP-MED to dynamically assign the VLAN ID value to IP phones.D. It allows trunk ports to accept tagged voice and untagged data packets.E. It must use the same VLAN ID as data traffic on a defined interface.

Answer: ABCExplanation:A (not D): The Voice VLAN feature in EX-series switches enables access ports to accept both data (untagged) and voice (tagged) traffic and separate that traffic into different VLANs.B: To assign differentiated priority to Voice traffic, it is recommended that class of service (CoS) is configured prior to enabling the voice VLAN feature. Typically, voice traffic is treated with a higher priority than common user traffic. Without differentiated treatment through CoS, all traffic, regardless of the type, is subject to the same delay during times of congestion.C: In conjunction with Voice VLAN, you can utilize Link Layer Discovery Protocol Media Endpoint Discovery (LLDP-MED) to provide the voice VLAN ID and 802.1p values to the attached IP phones. This dynamic method associates each IP phone with the appropriate voice VLAN and assigns the necessary802.1p values, which are used by CoS, to differentiate service for voice traffic within a network.https://kb.juniper.net/InfoCenter/index?page=content&id=KB11062&actp=search

QUESTION 3Which two statements are correct about aggregate routes in the Junos OS? (Choose two.)

A. An active route can contribute only to a single aggregate route.B. Only one aggregate route can be configured for each destination prefix.C. An aggregate route has a default next hop of an IP address.D. An aggregate route always shows as active in the routing table.

Answer: ABExplanation:A route can contribute only to a single aggregate route.You can configure only one aggregate route for each destination prefix.

QUESTION 4Which device is used to separate collision domains?

A. switchB. routerC. hubD. firewall

Answer: AExplanation:Modern wired networks use a network switch to reduce or eliminate collisions.By connecting each device directly to a port on the switch, either each port on a switch becomes its own collision domain (in the case of half duplex links) or the possibility of collisions is eliminated entirely in the case of full duplex links.https://en.wikipedia.org/wiki/Collision_domain

Answer: ABEExplanation:The BGP extended communities attribute format has three fields:type: administrator: assigned-number. type is the type of extended community and can be either the 16-bit numerical identifier of a specific BGP extended community or one of these types: origin– Identifies where the route originated.domain-id– Identifies the OSPF domain from which the route originated.target– Identifies the destination to which the route is going.bandwidth– Sets up the bandwidth extended community. Specifying link bandwidth allows you to distribute traffic unequally among different BGP paths.rt-import– Identifies the route to install in the routing table.src -as– Identifies the AS from which the route originated.You must specify an AS number, not an IP address.https://www.juniper.net/techpubs/en_US/junos12.3/topics/usage-guidelines/policy-defining-bgp-communities-and-extended-communities-for-use-in-routing-policy-match-conditions.html

QUESTION 7Which two statements are true about DIS elections in IS-IS? (Choose two.)

A. If a priority tie occurs, the router with the lower subnetwork point of attachment (SNPA) value becomes the DIS.B. If a priority tie occurs, the router with the higher subnetwork point of attachment (SNPA) value becomes the DIS.C. The router with the lower priority value becomes the DIS.D. The router with the higher priority value becomes the DIS.

QUESTION 8Host-1 was recently added in the network and is attached to ge-0/0/10 on Switch-A.Host-1 is powered on and has its interface configured with default Layer 2 settings and an IP address on the 172.17.12.0/24 IP subnet.Host-1’s MAC address is not shown in Switch-A’s bridging table.What are three explanations for this state? (Choose three.)

A. The ge-0/0/10 interface is configured as an access port.B. The ge-0/0/10 interface is not operationally or administratively up.C. The ge-0/0/10 interface does not have an associated IRB.D. The ge-0/0/10 interface has not received any traffic from Host-1.E. The ge-0/0/10 interface is configured as a trunk port.

QUESTION 9Router-1 and Router-2 need to connect through the Internet using a tunneling technology.Hosts that are connected to Router-1 and Router-2 will be sending traffic up to 1500 bytes.The maximum segment size is supported across the path is 1520 bytes.Which tunneling technology will allow this communication to take place?

Answer: DExplanation:Difference Between GRE and IP-IP Tunnel. Generic Routing Encapsulation (GRE) and IP-in-IP (IPIP) are two rather similar tunneling mechanisms which are often confused. In terms of less overhead, the GRE header is 24 bytes and an IP header is 20 bytes.

You have deployed the access control configuration to the distribution switch.

Referring to the exhibit, which statement is true?

A. All hosts connected to the access switch require authentication to access the network.B. All hosts connected to the access switch will have access to the network after one host authenticates.C. All hosts connected to the access switch will have access to the network without authentication.D. Only the first host to authenticate will have access to the network, other hosts will be blocked.

Answer: B

QUESTION 32Click the Exhibit.

Referring to the exhibit, traffic from User-1 is being forwarded to Server-1 with DSCP values that must be written. You must maintain the rewritten DSCP values throughout the network.

Which statement is correct in this scenario?

A. At a minimum, you must rewrite the DSCP values on R1.B. At a minimum, you must rewrite the DSCP values on R1 and R4.C. At a minimum, you must rewrite the DSCP values on R1, R2, and R3.D. At a minimum, you must rewrite the DSCP values on R4.

Answer: D

QUESTION 33Click the Exhibit.

You are adding a Junos Fusion satellite device but one cascade port is not coming on line.

Referring to the exhibit, what would cause this problem?

A. The satellite device is not an EX4300.B. The cascade ports need to be on the same line card.C. The FPC number must match the FPC connecting to the satellite device.D. Interface xe-8/2/1 is in a link down state.

Answer: D

QUESTION 34In Layer 2 environment where 802.1X is deployed with its default parameters on EX Series, which two statements are correct? (Choose two.)

A. RADIUS authentication requests are sent from authenticator to the authentication server.B. DHCP traffic from supplicants is denied by default through the authenticator.C. RADIUS authentication requests are sent from the supplicant to the authentication server.D. DHCP traffic from supplicants is permitted by default through the authenticator.

Answer: AB

QUESTION 35Click the Exhibit.

Your network is experiencing congestion across the link between R2 and R3. You must make changes to alleviate traffic congestion from R3 to R2.

Referring to the exhibit, which two commands would accomplish this task? (Choose two.)

QUESTION 36Which two statements are correct about using LLDP on junos devices? (Choose two)

A. LLDP operates on layer 2 and layer 3 interfacesB. LLDP can interoperate with the cisco discovery protocol CDPC. LLDP is enabled on all devices by defaultD. LLDP operates on layer 2 interfaces

Answer: AC

QUESTION 37You have certainly implemented the configuration shown in the exhibit. After committing these changes, the community devices connected to AS-1 are not able to communicate with the appropriate community devices connected to AS-2.What must be done to allow these community devices to communicate?

A. You must configure an isolation VLAN ID Under the pvlan-200 on the AS2B. switch You must configure the ge-0/0/10 interface on AS1 AS THE VPLAN on both switchesC. You must configure an isolation VLAN ID under the VLAN 200 ON both switchesD. You must configure the ge-0/012 interface on both switches as P VLAN trunks

Answer: D

QUESTION 38Which two statements is true regarding the next hop attribute? (Choose two)

A. it is not changed when sent across EBGP sessionsB. it is changed to self for IBGP routes learned from EBGPC. it is not changed for IGBP routes learned from EBGPD. it is Changed by default when sent across EBGP sessions

Answer: CD

QUESTION 39Your enterprise network is providing layer 2 connectivity between remote-sites using Q-in- Q tunneling. A customer wants to ensure their connection through your network is also participating in their spanning free topology. In this scenario, which solution must be used?

A. you must configure the Q in Q tunnel to use L2PT to tunnel STP packetsB. you must configure the same isolation ID on both sides of the tunnelC. you must configure spanning tree on the interfaces connected to the customers sitesD. you must configure spanning tree to tunnel packets

Answer: A

QUESTION 40You want to deploy MSTP with multiple regions. Each region should have a unique root bridge to accommodate a set of VLANs. Which three configuration elements must watch on switches participating in this deployment scenario? (Choose three)

QUESTION 21You are asked to merge a RIP network with your OSPF network. As a first step, you establish connectivity between the RIP network and the OSPF network. The RIP network connects to an NSSA area. Which two statements are true in this scenario? (Choose two.)

A. To share RIP routes with the OSPF network, an export policy will be required on the ABR.B. To share RIP routes with the OSPF network, an export policy will be required on the ASBR.C. By default, external OSPF routes have a higher route preference than RIP routes.D. Be default, RIP routes have a higher route preference than external OSPF routes. Read more

QUESTION 21You are asked to merge a RIP network with your OSPF network. As a first step, you establish connectivity between the RIP network and the OSPF network. The RIP network connects to an NSSA area. Which two statements are true in this scenario? (Choose two.)

A. To share RIP routes with the OSPF network, an export policy will be required on the ABR.B. To share RIP routes with the OSPF network, an export policy will be required on the ASBR.C. By default, external OSPF routes have a higher route preference than RIP routes.D. Be default, RIP routes have a higher route preference than external OSPF routes. Read more

A. Apply the input-shape-rate 5G parameter to all interfaces under the [edit class-of service] hierarchy.B. Define a CoS input traffic control profile with the shape-rate 5G parameter and apply it to all interfaces.C. Define a CoS output traffic control profile with the shape-rate 5G parameter and apply it to all interfaces.D. Apply the shape-rate 5G parameter to all interfaces under the [edit class-of service] hierarchy.] Read more

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A. Apply the input-shape-rate 5G parameter to all interfaces under the [edit class-of service] hierarchy.B. Define a CoS input traffic control profile with the shape-rate 5G parameter and apply it to all interfaces.C. Define a CoS output traffic control profile with the shape-rate 5G parameter and apply it to all interfaces.D. Apply the shape-rate 5G parameter to all interfaces under the [edit class-of service] hierarchy.]

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QUESTION 236You are asked to reduce broadcast traffic within the switching domain. You want VLAN broadcast traffic to only go to switches that have VLAN members connected to the network.How would you accomplish this task?

A. storm control on all of the switches in the networkB. configure multiple VLAN registration protocol [MVRP] on all trunk ports in the networkC. use the set vlans<vlan name>vlan prune command for all configured VLANsD. Use the set protocols igmp-snooping vlan all immediate-leave command

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QUESTION 2Which two statements are correct when performing a unified ISSU? (Choose two.)

A. The master Routing Engine and backup Routing Engine must be running the same software version before you can perform a unified ISSU.B. Unicast RPF-related statistics are not saved across a unified ISSU, and the unicast RPF counters are reset to zero during a unified ISSU.C. Unicast RPF-related statistics are saved across a unified ISSU, and the unicast RPF counters are not reset to zero during a unified ISSU.D. The backup Routing Engine must be running the most recent software version before you can perform a unified ISSU.

QUESTION 3Referring to the exhibit, PE1 and PE2 are acting as MPLS Layer 3 VPN PEs to provide the DCI between DC1 and DC2, which are IP Fabrics. Leaf 1 and Leaf 2 are QFX5100 Series devices acting as VXLAN Layer 2 Gateways using EVPN signaling for the same VXLAN segment.

Which statement is correct about the Edge1 device in this scenario?

A. Edge1 must be configured for MP-BGP using EVPN signaling.B. Edge1 must be configured for MP-BGP using L3VPN signaling.C. Edge1 must be configured for BGP labeled unicast on its PE1-facing interface.D. Edge1’s routing table must contain an IP route to both Leaf1 and Leaf2.

Answer: AExplanation:Assumption here that the MPLS backbone network offers EVPN; this is the most fully-featured solution.This could also be achieved via C; BGP-LU shared with the provider, basically extending MPLS down to the Edge1+2 routers; this is less `risky’ for the MPLS backbone operator. B and D are ignoring EVPN/ VXLAN components and refer to traditional Layer 3 IP routing.https://www.juniper.net/documentation/en_US/junos/topics/concept/evpns-overview.html

QUESTION 4Referring to the exhibit, which two MAC addresses are learned from the local side of the MC-LAG link?

A. 4c:96:14:e8:c6:fe and 4c:96:14:e8:a6:16B. 4c:96:14:e8:c6:fd and 4c:96:14:e8:f0:21C. 4c:96:14:e8:c6:fd and 4c:96:14:e8:a6:16D. 4c:96:14:e8:f0:21 and 4c:96:14:e8:a6:16

QUESTION 6You are deploying a spine-and-leaf IP Fabric in your data center using EBGP.In this scenario, which three statements are true? (Choose three.)

A. Each device should you use a different autonomous system number.B. Each leaf must peer to each spine.C. Each device should also run an IGP to advertise loopback interfaces.D. EBGP does not require a next-hop self-policy.E. Each leaf must peer to every other leaf.

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